Species: Tetragramma Sp.
County: Coryell
Site: _Coryell 1 (walnut)
Group: Fredericksburg
Formation: Comanche Peak
Member: None
Period: Cretaceous
Epoch: Lower K
Stage: Albian
Class: Echinoidea
Order: Euechinoidea
Superfamily: None
Family: Pseudodiadematidae
Genus: Tetragramma
State: Texas
Credit: mmm
ID: 855
MMM ID: None